The TDMS is an eight-function programmable timer with seven time ranges from 0.001 sec to 9999 hours. It features a key protect feature to prevent unauthorized timing mode changes, and it can be programmed to time UP or DOWN. It has 100-240VAC or 24VAC/DC versions, with a backlit liquid crystal display of elapsed/remaining time and set time. It features two fully independent set times in recycling mode, and a long-life lithium battery for changing, displaying, or storing the set time while power is off. It has universal contact or solid-state input terminals, signal inputs for start/gate and reset, and a 48-DIN size with plug-in octal base. It has sockets available for panel, surface, or DIN-rail mounting, and it is UL and CSA approved.